This is an all-time classic Danish cake. It is actually made from leftover cake, and has been a cheap cake at most baker shops. Now I do not believe that rum balls are cheap cheap anymore, most baker shops make these from cakes baked solely to be used in the rum balls.

My version is made with good chocolate, marzipan and almonds to elevate the classic rum balls. You can use real rum, when making these, but you get more flavor by using an extract.